352 OUTLINES OF PERIODICAL LITERATURE. 
tis’ Guide, Mr. Haliday begins with the dipterous tribe: Culex detritus, C. 
fulveola, Leia nasuta, Tiimnobia egle, Spania fallenii, Medeterus ruficornis, 
Dolichopus sabinus, D. signifer, Platypeza infwmata, Musca morellia importuna 
et hortorwm, Anthomyia monilis, A. cilipes, Scatophaga fuvorum, 8. maritima, 
Ceelopa pilipes, C. frigida, C. simplex, C. sciomyzina, Saltella stellata, Sepsis 
duplicata, Tephritis duplicaia, T. asteris, T. pini, Oscinis capreolus, O. rapta, 
Helomyza arenaria, Sciomyza virgata, Ochthipila flavipalpis, O. geniculata, 
Heteroneura fava, Opomyza illota, Diastata glabra, Spheerocera sobricula and 
Limosina arcuata. Mr. H.’s hemipters are, Atheroides serratulus, A. hirtellus 
and Eriosoma pallida, which inhabits the leaves of the mountain-elm. Dr. 
Meyen’s note, contributing the results of experiment, on the formation of 
the fibrous cells or tubes in the liber of plants, appears in an English ver- 
sion : it precedes a communication from Mr. Reade on some new organic 
remains in the chalk-flints; this is illustrated with two accurately finished 
plates, containing twenty-eight figures of scales of fishes not named, and 
eight of scales of the white-bait, grayling, carp, barbel, red gurnard, grey 
mullet, gudgeon, and dace; and with figures of nine infusoria—Xanthidium 
furcatum, X. crassipes, X. hirsutum, X. ramosum, and X. tubiferum, with three 
varieties or duplicates—all discernible by the microscope in the flints of 
chalks: in these, also, very fine examples of coniferous wood sometimes 
occur. Mr. R. concludes his sketch with the beautifully impressive and 
well-timed remark—here, he says, “I close this account of an investigation 
which no right-minded man will prosecute without directing his thoughts to 
Him who of old turned the hard rock into a standing water, and the flint-stone 
into a springing well.” Mr. Walker furnishes an addition to his descriptions 
of British Chalcidites, and distinguishes the Cirr. arcticas and three varieties, 
C. acesius, with seven varieties, C. armeus and six varieties, C. meira, C. 
eurytus, C. mandarius, C. anysis with five varieties, C. ecus and five varieties» 
and C. euedochus with one variety: the characters are defined with particular 
minuteness and precision. An additional portion of Mr. Cunningham’s spe- 
cimen of the Botany of the New Zealand islands embraces his phytographi- 
cal characters of Opercularia diphylla, O. aspera, Galium tenuicaule, G. pro- 
pinquum, Coprosma lucida, C. fetidissima, C. propinqua, C. rotundifolia, C. 
rhamnoides, C. gracilis, C. divaricata, C. acerosa, C. repens, C. spathulata, Ro- 
nabea australis, Nertera depressa, Geophila dichondrefolia, Viscum antarticum, 
V. pubigerum, V. salix cornoides, Loranthus tetrapetalus, Alseuosmia linariifo- 
lia, A. ligustrifolia, A. banksia, A. paleiformis, A. atriplicifolia, A. ilew, A, 
quercifolia, A. macrophylla,—the Alseuosmia is a new genus, and its generic 
characters are amply delineated,—Hydrocotyle elongata, H. microphylla, H. 
nove zealandie, A. dichondrefolia, H. heteromeria, H. compacta, H. moschata, 
H. asiatica, Petroselinum prostratum, P. filiforme, Ligusticum aciphylla, L. 
gingidium, Peucedanum geniculatum, Apium graveolens, Panax simplex, P. ar- 
boreum, Cussonia lessoni, Polyscias pinnata, Aralia schefiera and A. crassifolia, 
making the 514th article in Mr. C.’s curious and valuable list. Three “bi- 
bliographical notices” conduct you agreeably to the “ proceedings of learned 
societies,” and the first of these is the “‘ Zoological.” At this, a new species 
of squirrel was exhibited by Mr. Waterhouse, who named it Sciurus swéline- 
atus, giving its distinctive characters. Mr. Blyth defined a hitherto-unno- 
ticed peculiarity in the structure of the feet in the Trogonide, and Mr. 
Owen continued his excellent essay on the anatomy of the Giraffe, compris. 
